Results 31 to 40 of about 6,621,534 (346)

Psychophysical aspects of contrast sensitivity

open access: yesAfrican Vision and Eye Health, 2013
This paper reviews the psychophysical aspects of contrast sensitivity which concerns components of visual stimuli and the behavioural responses and methods used in contrast sensitivity testing.
Anusha Y. Sukha, Alan Rubin
doaj   +1 more source

Comparison of the outcome of partial time occlusion therapy in strabismic versus anisometropic moderate amblyopes

open access: yesJournal of the Egyptian Ophthalmological Society, 2022
Background Early in life, selective visual input disruption to one eye compromises most of the visual aspects, resulting in amblyopia, with a great social and economic effect.
Momen M Hamdi   +3 more
doaj   +1 more source

Neonatal Contrast Sensitivity and Visual Acuity: Basic Psychophysics

open access: yesTranslational Vision Science & Technology, 2018
Purpose This research was prospectively designed to determine whether a 0.083 cycles per degree (cy/deg) (20/7200) square-wave stimulus is a good choice for clinical measurement of newborn infants' contrast sensitivity and whether the contrast ...
Angela M. Brown   +2 more
semanticscholar   +1 more source

Contrast sensitivity in β-thalassemic patients

open access: yesJournal of the Egyptian Ophthalmological Society, 2015
Aim of work This work aimed to diagnose any abnormalities in contrast sensitivity and retinal functions in β-thalassemic patients. Patients and methods Thirty patients diagnosed with b-thalassemia were included in this study.
Tamer H El-Sersy, Heba W El-Saed
doaj   +1 more source

Evaluating the performance of the quick CSF method in detecting contrast sensitivity function changes

open access: yesJournal of Vision, 2016
The contrast sensitivity function (CSF) has shown promise as a functional vision endpoint for monitoring the changes in functional vision that accompany eye disease or its treatment.
Fang Hou   +6 more
semanticscholar   +1 more source

The Effect of Ocular Surface Regularity on Contrast Sensitivity and Straylight in Dry Eye.

open access: yesInvestigative Ophthalmology and Visual Science, 2017
Purpose To investigate the association between visual function and ocular surface regularity in dry eye. Methods We enrolled 52 eyes of 52 dry eye patients (34 dry eyes with superficial punctate keratopathy [SPK] in the central corneal region [central ...
S. Koh   +7 more
semanticscholar   +1 more source

Active Learning to Characterize the Full Contrast Sensitivity Function in Cataracts

open access: yesClinical Ophthalmology, 2022
Filippos Vingopoulos,1,2 Megan Kasetty,1 Itika Garg,1,2 Rebecca F Silverman,1 Raviv Katz,1,2 Ryan A Vasan,3 Alice C Lorch,3 Zhonghui K Luo,3 John B Miller1,2 1Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA;
Vingopoulos F   +8 more
doaj  

The effect of transcranial direct current stimulation on contrast sensitivity and visual evoked potential amplitude in adults with amblyopia

open access: yesScientific Reports, 2016
Amblyopia is a neurodevelopmental disorder of vision that occurs when the visual cortex receives decorrelated inputs from the two eyes during an early critical period of development. Amblyopic eyes are subject to suppression from the fellow eye, generate
Z. Ding   +9 more
semanticscholar   +1 more source

Dyschromatopsia and contrast sensitivity changes in COVID-19 patients

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: To evaluate the alterations in the psycho-physical tests, contrast sensitivity (CS) and hue discrimination (total estimation score, TES) in COVID-19 patients.
Aditi Sharma   +10 more
doaj   +1 more source

Predicting individual contrast sensitivity functions from acuity and letter contrast sensitivity measurements

open access: yesJournal of Vision, 2016
Contrast sensitivity (CS) is widely used as a measure of visual function in both basic research and clinical evaluation. There is conflicting evidence on the extent to which measuring the full contrast sensitivity function (CSF) offers more functionally ...
Steven M. Thurman   +4 more
semanticscholar   +1 more source

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